A group of UAC Marines responds to a distress call from a top-secret scientific base on Phobos, a Martian moon, only to discover it’s been overrun by demons.

When a D.E.A. and S.W.A.T. cartel takedown ends in a shootout, S.W.A.T. Agent Travis Hall seizes a mysterious prisoner taking him into custody. Before long, the S.W.A.T. compound is under…